Shock absorber



E. ClNQUINl.

SHOCK ABSORBER.

APPLICATION FILED SEPT. 13. 1921.

Patented Deo. 112, 1922..

2 SHEETS-SHEET l.

E. CIYNQUIM.v

SHOCK ABSURBER.

APPLICATION FILED SEPT. |31 1921- Lqglg Patented Dec. 12, l922.

2 SHEETAS-SHEET 2.

ycited inzthe claims.

melma nee`12, 1922.A

PATENT OFFICE'.

v EGIsro' QINQUINI, or NEW HAVEN, coNNEcrIcUT.

' SHOCK ABSOBBEB.

Application filed September 13, 1221. Seriallo. 500,110.4.

i' To all whom t may conc-ern.'

1 3e .it known that I, Eors'ro CINdUINI, a cltlzen of the United States, residing at .New Haven, in the county of New Haven and State of Connecticut, have invented a' new and useful Improvement in Shock Absorbers; and I do hereby declare the following,

`when taken in` connection with the accompanying drawings and the characters of reference marked thereon, to `be a full, clear, and exact description of the saine, and which said drawings constitutelpart of this application, and represent, in

f Fig. 1 a side view of a shock absorber constructed in accordance with myinvention.

' Fig. 2 a top or plan viewbf the same.

Fig. 3 a sectional view on the line 3 3 of Fig. 1. FFig. 4 a sectional view on the line 4--4 of 'This invention relates to'improvementin shock absorbers, and particularly to shock absorbers adapted for motor vehicles and which are of the hydraulic type and which include a vpiston moving back and forth in ai cylinder which contains a certain amount 4of liquid material:

The object of this invention is to provide a simple construction by which the liquid is readily controlled. andthe flow adjusted according to the requirements of. the vehicle tov which the ldevices are applied, and the invention consists inthe construction as will be hereinafter described and'particularly re- Ivn carrylng out my inventioml employ a cylinder 1'0 adapted to be connected with a vehicle body and formed with a central bore 11 in which apiston 12`travels, this piston being moved by a lever 13 connected with itthrough a clearance slot 25' in the cylinder andpivotally mounted at a point .between the cylinder and vehicle-axle 14, with which the lever 13 isv connected. In the bottom of the cylinder is a spring-cushion 15-and at the top ofthe cylinder is a similar spring-cushion 16.' On one side of the cylinder is a passage 17 connecting the upper and lower ends of the cylinder and on the opposite side is a similar passage 18. The o ening of the passage 17 at the top of the cy lnder 1s controlled by a valve 19 normally held in its closed positlon by a spring 20 mounted in a valve caslng 21, which may include a filling-cup 22.

n the passage 17 is an adjusting-screw 23 .and in the passage 18 is a similar screw 24.

It will be understood that the cylinder is filled, or partially filled, with a suitable fluid material. When the piston moves upward, the valve 19 is closed, so that no liquid can enter the upper end of the passage 17, but

`must .be vforced downwardv through the passage 18 'mto the bottom of the cylinder, so that the upward movement of the vpiston is relatively slow.l On the other hand, 4when the piston moves downward, the liquid can move upward through both the passages 17 and 18, and hence the piston can move morel rapidl and, therefore, recover or assume its norma position more quickly. The screws 23 and 241v adjust the flow ofliquid through the passages 17 and 18, so that the operation of thedevice is'closely adjusted to the load.

llt will be understood that the method of mounting the cylinder and the means for moving the piston therein will vary accordingvto the type of vehicle to which the de-v vice is applied, and, therefore, l do not wish to be understood as limiting my invention to the exact construction shown.

I claim:

1. A shock absorber, comprising a cylinder-casing formed with a longitudinal bore, a passage through the' casing on opposite sides connecting the opposite ends of the cylinder, a check-valve at the upper end of one of said passages, a pistonv longitudinally movable in the said cylinder and a lever extending through the case into engagement with the piston. l .l

2. A shock absorber', comprising a casing formed with a cylindrical chamber, said vchamberclosed at opposite ends, lon itudinal passages on opposite sides connectlng the opposite ends of the cylinder, a check-valve at the upper end of one of said passages, a piston in said cylinder, and a'lever extending through the casing into engagement with the piston.

3. A lshock absorber, comprising a cylinder closed at opposite ends and provided at opposite ends with spring-cushions, a piston in In testimony whereof, I have signed this speclcation in the presence of two subscrib- 10 ing Witnesses.

y EeIsTo CINQUINI. Witnesses WILLIAM VERDI, JOHN J. CUANELLO, 

